Gamochaeta pensylvanica

Basic information
Scientific name	Gamochaeta pensylvanica	Click to magnify
Major synonym	Gnaphalium pensylvanicum
Common names	Wandering cudweed, Manystem cudweed
Higher taxon	Asteraceae, Asterales, Magnoliopsida, Magnoliophyta
Natural range	North America.
Habitat	Farm area, lawn field, roadside, vacancy, etc.

Invasion information
Range in Japan	Almost entire Japan
Origin	Unknown.
Date	The first record was in 1916.
Route	Accidental: Details unknown.
Impact	Potentially: Competition with native species, crops, lawn grasses, etc. Native organism(s) affected: Native grasses, crops, lawn grasses, etc.
Regulation in Japan	No action for prevention, mitigation, control, or eradication.
Introduced range in other countries	South America, Europe, Africa, Asia, Oceania

Reference	Notes
Jpn Assoc Advanc Phyto-Regul & Inst Contr Agrochem, Minist Agr, China (2000) Chinese Colored Weed Illustrated Book. Zenkoku-Noson-Kyoiku-Kyokai, Tokyo Satake et al. (1981) Wild Flowers of Japan, Herbaceous Plants [III]. Heibonsha, Tokyo (in Jpn) Shimizu (ed) (2003) Naturalized Plants of Japan. Heibonsha, Tokyo (in Jpn) etc.